Dell R 420 Manual

Removing The Control Panel
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your 
warranty. Read and follow the safety instructions that came with the product.
1.If installed, remove the front bezel.
2.Turn off the system, including any...

Figure 53. Removing and Installing the Control Panel—Eight Hard Drive System
1.control panel
2.notches (4)
3.LCD connector cable
4.screw
5.locking tabs (4)
Installing The Control Panel
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by...

NOTE: For an eight 2.5 inch hard drive system, tighten the screw to secure the control panel to the bottom of 
the chassis.
3.Close the system.
4.Reconnect the system and peripherals to their power sources, and turn them on.
5.If applicable, install the front bezel.
Removing The Control-Panel Module
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online...

Figure 54. Removing and Installing the Control-Panel Module—3.5 Inch Cabled Hard Drive System
1.control-panel module
2.control-panel module screws (2)
3.control-panel module connector cable
4.USB connector cable
5.control panel
6.LED-panel screws (2)
7.LED panel
94 

Figure 55. Removing and Installing the Control-Panel Module—3.5 Inch Hot-Pluggable Hard Drive System
1.control-panel module
2.screws (2)
3.control-panel module connector cable
4.USB connector cable
5.control panel
95 

Figure 56. Removing and Installing the Control-Panel Module—2.5 Inch Hard Drive System
1.control-panel module
2.screws (2)
3.control-panel module connector cable
4.LCD connector cable
5.control panel
Installing The Control-Panel Module
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing...

VGA Module
NOTE: Only the 8-hard drive system has a VGA module on the front panel.
Removing The VGA Module
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your 
warranty. Read and follow the safety instructions that came with the...

5.screw (bottom)6.VGA module
Installing The VGA Module
NOTE: This procedure applies only to the 8-hard drive system.
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your 
warranty. Read and follow the safety instructions that came with...

Figure 58. Removing and Installing the PDB Shroud
1.cooling-fan bracket
2.PDB shroud tabs (2)
3.PDB shroud
4.arrow marked on the PDB shroud
Installing The Power Distribution Board Shroud
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by...

Power Distribution Board
Removing The Power Distribution Board
CAUTION: Many repairs may only be done by a certified service technician. You should only perform 
troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or 
telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your 
warranty. Read and follow the safety instructions that came with the product.
NOTE: The power distribution board is...